WMATA Rail Systems 4

Question 1

Continuous welded rail is preferred over jointed rail mainly because it:

Accepted Answer

Provides a smoother, quieter ride with less maintenance

Answer

Continuous welded rail reduces joints, giving a smoother ride and lower maintenance.

Question 2

During single-tracking operations, trains share one track by:

Accepted Answer

Taking turns in each direction under strict control

Answer

Single-tracking alternates train directions over one track under controller authority.

Question 3

Wheel flanges on a rail vehicle primarily serve to:

Accepted Answer

Keep the wheels guided on the rails

Answer

Flanges keep the wheelset centered and guided along the rails.

Question 4

If a fire or smoke condition occurs in a tunnel, the ventilation fans are typically used to:

Accepted Answer

Direct smoke away from the evacuation path

Answer

Tunnel ventilation fans push smoke away from the route passengers use to escape.

Question 5

A 'consist' in rail terminology refers to:

Accepted Answer

The makeup of cars forming a train

Answer

A consist is the specific set and arrangement of cars that make up a train.

WMATA Test Practice Test